GTModel Library Datasets CDB Datasets

153 © 2016 Open Geospatial Consortium 002 Bump Map Deprecated – Replaced with kind 052 003 Light Map Deprecated – Replaced with kind 053 Annex O enumerates all textures allocated to kind 002, 003, 004, 005, 006, and 055 See footnote 32.

5.4 GTModel Library Datasets

Table 5-9 provides the component selector values associated with all GTModel datasets. Table 5-9: Component Selectors for GTModel Datasets CS1 CS2 File Extension Component Name Component Description Dataset 500, GTModelGeometry 001 001 .flt Geometry Entry File Files containing the references to both the shell and interiors of all levels of detail of geotypical models. Dataset 510, GTModelGeometry 001 001 .flt Geometry Level of Detail Files containing the geometry of the shell of geotypical models for a given level of detail. Dataset 506, GTModelInteriorGeometry 001 001..999 .flt Interior Geometry Files describing the geometry of the interior of geotypical models for a given level of detail. The value of Component Selector 2 is the file number. Multiple files are used when the complexity of the interior justifies using more than one file. Dataset 503, GTModelDescriptor Dataset 508, GTModelInteriorDescriptor 001 001 .xml Descriptor Provides the metadata associated with a GTModel. See section 6.14, Metadata, for a description of the content. NOTE: A model descriptor includes a Composite Material Table for the exclusive use by its corresponding model geometry datasets above. This CMT is not to be confused with the GTModelCMT and GTModelInteriorCMT datasets below. Dataset 511, GTModelTexture Dataset 507, GTModelInteriorTexture - - .rgb Texture Individual base and subordinate textures applied on model geometry, see the complete list in section 5.3, CDB Model Textures. Dataset 504, GTModelMaterial Dataset 509, GTModelInteriorMaterial 001 001..255 .tif Composite Material Each texel is an index into the associated Composite Material Table dataset 505 and 513 below. CS2 is 154 © 2016 Open Geospatial Consortium Index the layer number. 002 001..254 .tif Composite Material Mixture Each texel indicates the proportion between 0.0 and 1.0 of the composite material found in the corresponding material layer. Component Selector 2 is the layer number. When the texels are of integral types, they are scaled to the range 0.0 to 1.0. Dataset 505, GTModelCMT Dataset 513, GTModelInteriorCMT 001 001 .xml Composite Material Table The Composite Material Table is associated with Material Textures; it contains the definition of the composite materials referenced by the model material datasets above. Its format is as specified in section 2.5.2.2, Composite Material Tables CMT Dataset 512, GTModelSignature See notes 1 and 2 below 001..999 001..016 .shp .shx .dbf RCS Signature The Radar Cross Section of a geotypical mode liss described in Volume 5 of this standard. 017..032 .dbf RCS Class Attributes The class-level attributes associated with the RCS Signature file as described in Volume 5 of this standard. Note 1: For GTModelSignature dataset, CS1 refers to the “RCS Frequency” and is used to indicate at which frequency in MegaHertz the dataset was generated for. The value of CS1 represents a power of 10 of the frequency and ranges from 1 to 999. The range of frequencies that can be represented is from 10 1 MHz to 10 999 MHz. Note 2: For GTModelSignature dataset, CS2 refers to the “RCS Polarization Type” and is used to indicate how the electromagnetic field is polarized at transmission and reception by typical Radar. The value can range from 1 to 16 for the instanced-level attributes and from 17 to 32 for the class-level attributes. 155 © 2016 Open Geospatial Consortium Polarization Type CS2 Description Instance Attribute Class Attribute 1 17 LINEAR Polarization 2 18 CIRCULAR Polarization 3 19 ELLIPTICAL Polarization 4 20 SINGLE HH Polarization 5 21 SINGLE HV Polarization 6 22 SINGLE VV Polarization 7 23 SINGLE VH Polarization 8 24 DUAL HH-HV Polarization 9 25 DUAL VV-VH Polarization 10 26 DUAL HH-VV Polarization 11 27 ALTERNATING HH-HV Polarization 12 28 ALTERNATING VV-VH Polarization 13 29 POLARIMETRIC HH Polarization 14 30 POLARIMETRIC VV Polarization 15 31 POLARIMETRIC HV Polarization 16 32 POLARIMETRIC VH Polarization

5.5 MModel Library Datasets